초록 ▼

An acceleration orbit face of particle beam circular acceleration unit is placed at right angles to a rotation shaft of rotation unit for rotating the particle beam circular acceleration unit, beam transport unit, and irradiation field formation unit in one piece. Shields for shielding radiations an

An acceleration orbit face of particle beam circular acceleration unit is placed at right angles to a rotation shaft of rotation unit for rotating the particle beam circular acceleration unit, beam transport unit, and irradiation field formation unit in one piece. Shields for shielding radiations and magnetism are placed symmetrically with respect to the center axis of the particle beam circular acceleration unit. Shields are placed symmetrically with respect to the center line of the particle beam circular acceleration means, thereby lessening the amount of beams coming in collision with surrounding walls from the beam acceleration orbit, decreasing the radiation leakage amount, lightening the shields, and providing a light particle beam irradiation apparatus.

대표청구항 ▼

[ What is claimed is:] [1.] A particle beam irradiation apparatus comprising:particle beam circular acceleration means having particle beam generation means for generating a particle beam, said particle beam circular acceleration means generating a magnetic field through which the generated particle

[ What is claimed is:] [1.] A particle beam irradiation apparatus comprising:particle beam circular acceleration means having particle beam generation means for generating a particle beam, said particle beam circular acceleration means generating a magnetic field through which the generated particle beam is accelerated, circularly accelerating the particle beam, and emitting a resultant particle beam;beam transport means for transporting the particle beam to an irradiation room in which an irradiated body is placed;irradiation field formation means for forming the particle beam to any desired shape and irradiating the irradiated body with the particle beam; andmeans for rotating said particle beam circular acceleration means, said beam transport means, and said irradiation field formation means as a unit,wherein an acceleration orbit plane, containing the circular paths along which said particle beam is accelerated, of said particle beam circular acceleration means is disposed at right angles to a rotation axis of said rotation means, and whereinthe irradiated body to be irradiated with the particle beam is placed on the rotation axis of said rotation means.